Originally Posted by rsdene
Originally Posted by Arnie
GGR recommends setting it to 0.70 mm
well i have group a coil and 909 leads and i just get a miss fire above 0.6
u using group a coil and still can't increase the gap? I'm just using the normal coil and I set mine to 0.7mm and everything is sweet, but I'm using champion's racing plugs